PIONEER TILLERS | MODEL CONSTRUCTION

Which exhibit the most interesting? Obviously, the one with the most visitors, which often induce camera lenses. This exhibit at the Moscow city exhibition scientifically-technical creativity of youth in 1984, dedicated to the 60th anniversary of the Komsomol assignment of a name of V. I. Lenin, was the tillers “Vyatka-1M”, made in a circle autocostruzione of the Palace of pioneers and pupils named after N. K. Krupskaya of the Bauman district of Moscow!

The members of the club, brothers Alexander and Vladimir Samsonov — now students of the Moscow automobile and road College, was taken as the basis, the development engineer S. Ilicheva (see “Vyatich” from the suburbs”, “M-K” № 7, 1981).

The original design, however, not satisfy guys. Many components and parts were solved by them in their own way in the process of manufacturing and finishing. As a result of “Vyatka-1M” resembles the prototype, only the layout. It has become more stable, sleeker, much easier.

About this job brothers Samsonovich tells their mentor, group leader Konstantin Ivanovich Kruglik.

At first, the guys completely repeated design S. Ilyichev. However, when tested on a dacha she found flaws. Tillers proved to be unstable on the turns, it was hard to keep him in the furrow due to the raised center of gravity.

Fig. 1. “Vyatka-1M” (lugs removed):

1 — protective jacket. 2 — PTO. 3 — a flat fuel tank 4 — tank mount, 5 — ignition coil, 6— electronic unit plug. 7 — “the lever” gas. 8 — a grip working on. 9 — paw cultivator.

Fig. 2. Alteration of the frame:

1 — platform suspension bridge, 2 — hole stud fixing bracket. 3 — loop suspension of the holder of the working body, 4 — delete the part of the frame.

Fig. 3. Bracket engine:

1 — base 2 — clip. 3 — resistant area. 4 — ribs, 5 — support. 6 —grooves in the pin fixation.

It was also found that the launch of the kick-starter is not very convenient, and worked the engine is unreliable, apparently, a long curved nozzle of the carburetor worsened nutrition. Direct fast lugs were filled with soil, and the plow rolled the layer of the earth directly to the wheel.

Of course, all this does not suit us, and we wondered how to improve the car. Decided to reduce the vertical clearance of the cultivator and at the same time its weight.

Started with a frame (see “M-K” № 7, 1981, pp. 8-10). The inclined part and the lower beam cut off; the platform suspension bridge was moved to the upper beam; wyresdale loop of the suspension holder.

Then simplified bracket engine mount, left, in our opinion, the Essentials: base, clamp, support ribs and a resistant area. Changed the method of fixation of the bracket on the frame instead of the two bolts from the top — four studs at the sides.

From experience we knew that the cylindrical fuel tank is not always the best. In this situation, more suited for a tank of rectangular shape and small thickness. Attach to the cylinder head cover and the clip bracket of the engine.

As a result, “growth” of tillers decreased by 350 mm. lowering the center of gravity in combination with increased to 500-700 mm wheel track (depending on pivot disks) gave the structure the necessary stability.

The doubt was caused and the long curved pipe to the carb — short, regular better. So I went back to him. To operate the engine more reliable, used electronic control unit and the ignition coil, and instead of the kick starter set the starter pulley on the fan shaft.

The scheme of the transmission, it was decided not to change. However, the intermediate and suspension bridges made themselves. For simplicity used splines of the sprocket shafts and keyways. And again. So it was easy to choose the optimal gear ratio, sprockets manufactured separately from the hub by affixing bolts.

Top chain for security are covered.

Somewhat dierent is we have a holder of the working body with handles of control: they can be fixed in any of the three provisions.

R and S. 4. Suspension shaft.

Fig. 5. Wheel hub bearing and starter pulley.

Fig. 6. Holder with knobs:

1 — frame 2 — loop suspension holder. 3 — bolt suspension holder, 4 — Bush. 5 — handle, 6 — leash clamp 7 — clamp, 8 — fee retainer. 9 — pin, 10 — tine carrier 11 is curved grip of the working body 12 — bolt suspension of the working body 13 — adjusting bolt 14 — axis of the adjusting bolt 15 — the end wall.

Fig. 7. A typical connection of the sprocket with the hub.

As plow our — paw cultivator bent back grip, that the land is not filled up right wheel.

Were critical we and the throttle lever, believing that to control the motor of the motor-block it is not suitable “lever” is better.

Now about the wheels. Support decided not to use and opted for two wheels from the sidecar С3А. Lugs placed on them at an angle of 45°, the “Christmas tree” that they were able to clean itself when plowing. Instead of chains put the wheels of steel tapes…

Your walk-behind guys named “Vyatka-1M”. The efforts spent by them on improving the design of “Vyatichi”, the gift is not lost, the machine works reliably. For the second season, they plow heavy loam. And quite quickly — three hundred parts per hour to a depth of 220 mm.

The intermediate shaft also serves as a walking tractor PTO. Connecting it to the pump, a circular saw or a mower, you can perform a number of additional chores.

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